
...by an inclined PLANE
wrapped helically around an axis?
The Big Bang Theory Season 4, Episode 5

From the moment we
step off the PLANE,
The Big Bang Theory Season 12, Episode 23

...by an inclined PLANE
wrapped helically around an axis.
The Big Bang Theory Season 4, Episode 5

You get in this PLANE
The Big Bang Theory Season 5, Episode 18

Well, our PLANE leaves at 9 a.m.
Do you think you'll feel better by then?
The Big Bang Theory Season 3, Episode 15